Blog Forums DIY Speakers and Subwoofers Console teardown – see what I can do with it

2 voices
16 replies
  • Author
    Posts
    • #13661
      tvor-ceasar
      Moderator

      The teardown begins.

      This is the Sears Silvertone Stereo Radio Phonograph model 7087 in Maple that I’ve had for a few years and frankly, just don’t have the room for. So I am finally going to gut the cabinet and see if anything is worth playing around with.


       

      For those who don’t know, I’ve had to get both knees replaced, the first back in March when things started to lift a bit with the worldwide health crisis, and just last week for my second one. I am now able to sit for slightly longer times and just need to get this done. 

      Time to dig in. I’ll keep you updated.


    • #13662
      123toid
      Keymaster

      I’m really excited to see this project. This is going to be killer. I know it might take a while with your knees. But your knees are a whole lot more important than any project 😁


    • #13664
      tvor-ceasar
      Moderator

      @123toid thanks. Same with family. 🙂

      Got the back and one of the speaker covers off. I don’t know, maybe just the amp section might be interesting. I don’t need the tuner and all that. Maybe save the turntable if it’s salvageable but man, I like the looks of the speakers. Time to take some measurements.



    • #13665
      tvor-ceasar
      Moderator

      Inside. Love the knobs and switch covers. Why can’t they make cool stuff like this anymore? 😁

      Btw, inside dims of speaker boxes 16″x19″x14″


    • #13667
      tvor-ceasar
      Moderator

      Turntable fell apart as I took it out. Salvaged the knob and motor – spins like the day it was made. Everything else was brittle and dry. Not worth it. Now for the tuner and amp.


    • #13668
      tvor-ceasar
      Moderator

      At this point, I think that I’m going to salvage a few worthwhile parts off both the tuner and amp, most notably the transformers and the air variable tuning cap. These are about the only things worth any coinage, either to sell or to buy for personal use. All the old can caps, black bee caps, carbon comp resistors etc are just not worth it due to their age.

      Now here’s what I have to test to see if it was worth dragging this thing home. The speaker panels.

      A 12″ woofer, 4″ mid-range , and a 2×6 (I think, gotta measure em all) horn, that is, get this, an AlNoCo driver! I’m stoked to see if they work, but it’s dinner time and I’ve got to get something started.

      For the console, it’s gutted. Everything is out and I’ve removed all the screws I can access. Now to take a sledge to it so it can finally go away.

      Found this: https://www.radiomuseum.org/r/sears_roeb_silvertone_7087_order_57b_7087n.html

      You can click the second picture on the right. Says 200 watts (100watts music power per channel), which means it’s a 10 watts amp. Yeah, definitely only those parts I listed are staying.


    • #13673
      123toid
      Keymaster

      @tvor-ceasar I’m sitting here on pins and needles.  Did the drivers still work?

      I personally thought you were going to put in a small bluetooth amplifier or something like that.


    • #13676
      tvor-ceasar
      Moderator
      Posted by: @123toid

      @tvor-ceasar I’m sitting here on pins and needles.  Did the drivers still work?

      I personally thought you were going to put in a small bluetooth amplifier or something like that.

      I shall have to ask if you have your bed of nails ready for tonight?

      Not a chance to test yet. That took a toll on me, plus it is, as good old Lawrence Welk used to say, a “Wunnerful wunnerful” Monday, so work and healing from home.

      I am still stoked to see if they work. Gotta solder some new power leads on my test amp and I’ll be ready to go.

      I’ve also been thinking about the amp section. If the power and input transformers are good, and if the transistors check out, I may just see if I can get it working. Silvertones actually have a following in the guitar world.

      As far as actually doing something with the cabinet, this thing is huge and I have no where to put it. It was actually supposed to go to my oldest, but he ended up not wanting it. That link above shows the front, and I really am not that fond of that period in furniture. My Father in law’s old Nivico (Nippon Victor Company) console is more to my liking, but that’s in storage. That one I think you’ll like better as well. 

      When I get the chance, I will test them out. And if they do work, you’ll hear them. I’ve got some pretty good royalty free music that should test them fairly well, even without a box.

      I think that if I get some 5/8 or 3/4 ply to recreate the boxes and make some 60’s inspired pedestal feet, with some nice new herringbone or similar style grill cloth , these would make one hell of a real retro set of speakers. Especially with a nice real wood veneer. Mmmm, Tasty 


    • #13688
      tvor-ceasar
      Moderator

      Just an update. I found this plate while tearing the console apart.

      Makes me want to save the amp section even more. Who wouldn’t want to have this on a desktop class A “handwarmer”? 😁

      I’ll try to get some testing done this weekend. I’ll have the better parts of each day to myself, so I should be able to accomplish something. Hopefully I can get some decent sound or video if the drivers test out well. At least some better photos.


    • #13690
      tvor-ceasar
      Moderator


      Front and back of the Speaker Faceplates. Now on to getting my little bench amp up and running again for some sound tests. Stay tuned.


    • #13691
      tvor-ceasar
      Moderator

      Be sharing the raw video soon. Have to upload to the Tube of You due to file size. Hopefully I don’t have to convert it. It’s been a while…


    • #13692
      tvor-ceasar
      Moderator

      Okay, here it is: https://youtu.be/pbXNk-q-EK8

      Yeah, I know. Get a holder for the camera. I have one, just no clue where it went.

      Gear:
      Bench amp made from parts I listed elsewhere on the forum under “Test Amp
      Bluetooth receiver from Good old Walmart similar to this:

      Player – my old Samsung SM-G386T phone over bluetooth
      Video – my ASUS_X017DA phone
      Microphone – IMM-6 from Dayton Audio into the Asus.
      Raw MP4 video, I’m sure you can tell.

      Overall, I’m happy that it seems everything is working on both plates. And what you are hearing is only about 1.5 watts with no boxes behind them, just the wall. YEEHAW!!  🤠 

      ** Take note, in the video description are links to the music I used, in case you want to explore the site.


    • #13693
      tvor-ceasar
      Moderator

      More listening tests and i believe 1 of the 4″ mids is gone. I’ll double check a little later as I have to take it out of circuit to test. If I have to get something to replace it, at least I can use DATS on the good one to get close. We shall see. First to make up some custom test tones to see if there’s a weird wiring issue – it had been sitting for quite some time and the spade connectors could be gummy, etc. Ooohhh this is fun!!!


    • #13700
      123toid
      Keymaster

      @tvor-ceasar 

      oh man that stinks.  I hope that is not the case, but I wouldn’t be surprised if it was. You are making some crazy good progress


    • #13702
      tvor-ceasar
      Moderator
      • #22414
        123toid
        Keymaster

        Curious if you have made any progress on this?


      • #22422
        tvor-ceasar
        Moderator

        Haven’t done much since that burst. With everything else that was going on and all the other house repair needed, my spare times, other than my Monday night podcast attendance, has been put into differing orders of importance. The room these were recorded in is being turned into a guest room after 25+- years of having both kids in it, and it really showed. Just 2 Saturdays ago I spent my time in there redoing the ceiling fan, downstairs fixing the thermostat, and other general cleaning/clearing out. 30+ years in the same place let’s you know how much you’ve been able to accumulate. Holy mackeroli! I do hook them up while I’m in there, though. Had to go buy another BT dongle since someone decided they needed it more than I did. LOL

        BTW, if you’ve ever worked with old plaster and lath, you’ll know what I was dealing with…

        One good thing to come out of all this hub bub is that when the main house heater got replaced (yeah, that happened too), I had to clean up in the basement. More room now and there will be even more when I finish going through all the stuff from the in-laws moves and subsequent estate division.

        Oh, and I got a better motor for my table saw – going from a Packard to a B&G. Just have to figure out how to mount it.


You must be logged in to reply to this topic.

©2022 KLEO Template a premium and multipurpose theme from Seventh Queen

CONTACT US

We're not around right now. But you can send us an email and we'll get back to you, asap.

Sending

Log in with your credentials

or    

Forgot your details?

Create Account